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Apologising on social media, Mr Dean said "I have no desire to see anyone hurt; and can only apologise if anything I've done has had that effect."

Web Applications UK said it had conducted an investigation into the allegations and was satisfied "no bullying or intimidation occurred" during the interview.

"Nonetheless, the directors are extremely saddened by this incident and the impact that this has had on the individual concerned, particularly as we are a company that takes great pride in nurturing the aspirations of young people," it said in a statement.

"We will take this opportunity to reflect carefully on our recruitment process and HR policies."